Brother-and-sister team MATTHEW HOLM and JENNIFER L. HOLM are not nuclear physicists and have never received a Nobel Prize, but they're still working on it. In addition to their top-secret scientific work, Jennifer is the New York Times bestselling author of several highly acclaimed novels, including three Newbery Honor-winners, Our Only May Amelia, Penny from Heaven, and Turtle in Paradise. Matthew Holm is a graphic designer and freelance writer. To find out more, visit Babymouse.com.